
Average Reviews:

(More customer reviews)This is a finely machined adapter that goes on very easily and does what it's intended to do. All M42 lenses goes on without any problems, and is a perfect fit. However, on the Canon Eos 5D Mark 2, the camera's mirror will hang up on the lens' aperture actuating pin. I've asked someone about this, and apparently, one must pull out this actuating pin with a pair of pliers. This will disable any M42-mount camera from stopping down the aperture. The lens will stay at its widest aperture forever. On the other hand, if you have an M42 lens with a manually-operated aperture, the Eos 5D mark 2 will operate flawlessly, because manual aperture lenses do not have that pin.
Click Here to see more reviews about: Marumi Adapter: M42 Pentax Screw Mount Lens to Canon EOS Camera Body
Precision made Marumi® brand adapter. Allows you to use Pentax universal screw mount lenses on your Canon EOS mount camera. Allows focusing to infinity.Includes removal tool.Made in Japan.Does not support auto lens functions:manual focus & manual diaphragm only.